Safety water-glass fitting.



W. A. KITTSJR. SAFETY WATER'GLASS FITTING. APPUCATION min APR. I6, 1911;

Patented Dec. 18, 1917.

/7 T TOR/vs) p with the accompanying drawings, :is a: full, 1

"means 'Whereby the safety val thrown out of alinementwvith' the passageWILLARD A; Kim's, miyoriviounmrnLAK S, NEWJERSEYr :7

Tb-a zz hdm irmywmmw v Beit knownthat I, :l/VILLARD A; Klrrs, J r

acitizenof the United States of America, and resident of Mountain Lakes,inithe county of Morris, inthe' State of New 'Jer-I seyphavflein-vented'neW and-nseful mp'r'oVeater-Glass Fittings, of

ments in Safety which the following; taken in connection clear, andexact description: 1

ments in'isafety' ater glass fittingsin which the Water and steamzvalves f are equipped with safety valvesi ad aptedf 'to" close automaticallybypressure in' case the-Water glass; SlIOTll d break from any"cause} thus reducing the "dangers from i escaping: steam V and hotliwateriand "also permitting. the main fvalves to be closed withoutdan'ger to the operator untilQthe glass can be: replaced? with a' n'ev vstrliction andxoperation of the valve mecha nlsmfby reducmgthe number'ofparts tora minimum vand at the same time providingmeans whereby thesafety yalve may be,

easily and quickly vremoved and'repaired holesvorifittings in or uponthe valve case;

Affurthertobjeot' is: torprovide simple which it controls to permit theinsertion of a s litabl ertool entirely through said passage and intothe nipple for cleaning the same: frornrany obstructions which lodgetherein, or otherwise obstruct thepas "tend to sages:

v snrnTY Wilma-Grass FITTING;

isinventionrelat'es to certain improv'ei receiving the oppOsiitefendS lndevices 'o'f this'character,"it'i s necessary; Y to normally: sustainthe safety valves 1in'fp0-" sition [for autom'ati 0' operation and alsoto such automatioi T their respective" 1 jac ent'glands or Whennecessary I Without neoessltatlng extra ve. may. be

parts ofi the devicewill be brou'ghtf out the following description;

I-n-the drawings Figure 1 Water glass fitting embodyingthevariousfeatures'of my invention,a' portion ofthe W'a'ter' glass beingbroken Fig. 2 is a' Patented nee; 1&1917.

' 'limitationfiieiinprn'ia lsu; Serial No. 1624235; i

s'a longitudinal vertical sec tio'nal view partly in i elevation of asafety:

away.) horizontal sectional view thro 'igh the upper portion" ofth'e'lower having threaded 1'1ipp'les* '2' for attach mentto a 'boll'eroryvater and steam column and provided injtheiradjaoent sides withstuffing-boxes for: of a Water glass suitable glands or Eaollvalvecaseisprovided n ith tyvovalve 1 nested by an'externallyflthreaded' tubular bushlng {-7 adj u'stably:engagedinthread 1tween said valvechambers, the 'tubular'bush-i ed ap'ertnres '8;iin apartition 'be 'ecorresponding Itubul'a-r ingsi7 .ibeing coaxialiwiththeinletopenings 1 O inth nipplesf2 at theinner ends ofithevalve'j chambers6 and ,are' also coaxial 1 with; maln controlhn g valves;

l 1 which: latter are provided Withithreaded portions 12 screwing intoId-I" v outersid'es of the valvechambers :5+,'-and stuffing. boxesinth'e have external operating members consisting 'f of" hand-Wheels l%.

normally 'open' safety' checli-valves case through; glands +1?-vide'clfiat their outer ends with operating members, as levers,

'-l8 by Which they A s 7 I mayfbeaopene'd f(after the main valves areQthelggobjects and uses relating'to specificx closecllxincasedtheyfsliouldgstick to their;

I valve chamber 6+ just above the adjacent seats after being closed bythe pressure of escaping steam, or each lever being provided with aseparate pull-cord or cable a by which it may be conveniently operatedwhen necessary.

The opposite ends of each of the tubular bushings 7 constitute valveseats, one

for the main valve '11- and the other for the corresponding check valve-15," said bushing being adjustable axially to bring it into properposition or relation to the valve --15-. i

Each check valve 15- and its supporting spindle -16 are arranged toallow the valve to open automatically by its own weight, and for thispurpose the spindle 16 is journaledin opposite walls of the end of thetubular bushing 7 with its axis slightly beyond the vertical plane ofits seat.

to and is provided provided with an annular shoulder 22V ournal openingThe head of the valve -,15 is loosely journaled upon the reduced innerend -16 of the spindle 16i so as to have a limited rocking movementrelatively there- -19- coacting der on the spindle to limit the openingmovement of the valve,-1'5 to a position slightly separated from itsseat 1 The opposite sides of the spindle 16- and hub of the valve -15are provided with additional cooperative shoulders -+20, whereby thesafety valve may be. forced from its seat to its open position afterbeing closed from any cause, although, as previously stated,'the weightof the valve is usually suificient to open it automatically.

One of the sections, as 17-, of the gland 17 is threaded externally andscrewed into an opening 21 in the ad j acent side of the valve chamber6-, said opening being of suflicient size to allow the valve 15 to passtherethrough when the gland with the spindle therein is removed.

The inner end of the spindle -16'is abutting against the inner end faceof the gland section -17-' and serves the double purpose of packing theinner end of the for the spindle against leakage. and also to preventthe spindle frombeing blown out endwise through the gland by'pressurefrom within the valve r chamberposition by with a stop shoulder withiasimilar stop shoulmember consisting, in this instance, of a lever 18secured thereto by a lock nut 24 and adapted to be operated in onedirection by a retracting spring 25- which is coiled around the outerend of the spindle in the manner shown more clearly in Figs. 3 and 4.

The side of the valve chamber 6- in which the gland bushing -17 issecured is provided with an annular'boss 26 concentric with the spindle-16, and upon this boss is mounted for rotary adjustment a collar 27which is held in its adjusted said collar being provided with an axiallyextending arm --29 projecting some distance beyond the outer; endof the,gland -17 and into the path of movement of opposite ends of theoperating lever -18, to limit the rotary movement thereof, and therebylimiting the rocking movement of one or more set screws 28-,

the spindle 16 and valve-supporting One endof the retracting spring--25,

is attached to the lever l8 and its other end bears against one side ofthe stop arm -29 for normally and yieldingly holding the ad acent end ofthe lever against one edge of said arm, in which position thevalve,-15-- will be sustained in a partia tr open position by theshoulders -19 ready to close automatically in case the waterglass shouldbreak, it being understood that when the shoulders 19-'are in engagement with each other, the opposite shoulders -20 will be separated asufiicient distance. so that if either to allow the valve to close,valve -15 should cling to its seat after the main valves --11 have beenclosed, it may be opened forcibly by operating the corresponding lever-18 against the action of its retracting spring-25.

The object of the rotary adjustment of" the collar 27 is to not onlypermit the spindle valve to be rocked out of alinement with the nipple2-, so that'in the absence of steam and water in a the passage throughboth gage cocks a suitable cleaning tool may be passed through saidpassage for removing any foreign matter which may tend .to it beingapparent that l" accumulate therein,

16 and safety valve -15 to be properly ad usted relatively to each otherits the openings in the gland -13, bushing; 7- and nipple -2 arecoaxial, thus.-

forming a straight passage tool. i

These safety valves are usually operated with considerable force, bothby the op- The outer end of each of the valve spindles -16 is providedwith 1 an operating:

erator and the retracting spring -2-5, and 1t, therefore,rfollows thatthe limitingstops for the cleaning 1 are subjectedjto or less' 'sevene+strfa'ins, and I inorder: to secure greater and durability each stoparm .29 -:-1s' formed directly u pon the rollar- 27-' and stands outradially some distarice fromzthe axis of movement of the lever l8-;-with which it is adapted to,.- e'ngage, therebyre ducing the-force "ofimpact as the lever is operated against said abutments iirr: eitherdirection. r 7

- It is frequently necessary-to'blow out the water glass in order tokeep it free from accumulations of sediment, and forthis' purpose I haveprovided the lower valve with a drainage outlet pipe 30 having therein anormally closed controlling valve 3l which is opened only when the Waterglass is to be blown out and permits such valve to be placed somedistance below the water gage where it is more accessible and more fremote from the danger zone of the water glass.

During this latter operation it is, of course, necessary to hold thevalves 15 open by means of the pull-cords a, as otherwise they wouldclose automatically and prevent the escape of the steam and waterthrough the glass and drainage cock.

Each of the chambers 5 and its valve -11 constitutes what may be termeda gagecock or main valve of the water gage fitting, while each chamberr6and its corresponding valve 15, together with its restoring means, maybe termed the automatic check-valve or safety appliance as an adjunct tothe gage-cock adapted to be closed by the flow of fluid from thereceptacle as A through the gagecock when the latter is dischargingeither by voluntary opening of the valve -11- or by accidental breakageof the glass or other parts of the fitting.

The operation of my invention will now be readily understood, and whileI have shown a particularly practical and efficient means for carryingout the various objects, it is evident that various changes may be madein the form and arrangement of the various parts without departing fromthe spirit ofsuch invention, and, therefore, I do not limit myself tothe exact mechanism shown and described.

What I claim is:

1. The combination with a gage-cock for steam boilers. of a normallyopen self-opening check-valve in the connection between said boiler andgage-cock, and adjustable means for limiting the opening movement of thecheck-valve to vary the degree of such opening.

2. In a safety. water-glass fitting, a valve case having two valvechambers and a connecting passage between them, a water-glasscommunicating with one of said chambers,

permanency:

ment of the valve,

normally open l valvesicoactingfiwithl Y-oppo ii sitezends of saidpassagefor ontrollingzcom mvunicating' between the chambers-pone ofitheii valvesvbein g' adapted to be operated T by a the pressure/offfluiidfrom the boiler to autom-ati -f cally close: communication between 1said chambers inilcaseeof breakage of the waterglass vforisafetypurposes, operating stem 1.- I foriithe said safety valve extendingthrough one side of the case and provided with ex anda stop, on th'e ex5 ternalioperating means, terior of the case projecting into the path ofmovement -of said operating means for limiting the movement of the valvein one 7 direction. I

3. In a safety water-glass fitting, a valve chamber having inlet andexit openings and a bushing in one side, a normally open safety valve insaid chamber and adapted to close the exit passage by pressure of fluidfrom the boiler to which the inlet is connected, in case of breakage ofthe glass, said valve having a stem extending through said bushing andprovided with an external opcrating member, a collar adjustable aroundend of the stem within said chamber and normally open, said valve beingadapted to close the exit passage by pressure of fluid from the boilerthrough the inlet in case of breakage of the glass and provided withshoulders cotiperating with the first-named shoulders on the stem tolimit its rocking movement relatively to said stem, one set of coactingshoulders being disposed to sustain the valve in its normally openposition, the other set of shoulders serving to positively open thevalve as the stem is turned in the proper direction, an operating memberon the outer end of the valve stem, a stop arm on the exterior of thecase for limiting the movement of the operating member and valve stem inthe direction of closing move holding theoperating member against saidstop, whereby the operating member may be moved against the action ofthe yielding means for opening the valve.

5. In a safety water-glass fitting, a valve case having an inlet adaptedto be connected to a boiler and an outlet for communication with thewater glass, a valve for the outlet adapted to close by pressure fromthe boiler in case of breakage of the glass, said valve water-glassfitting, a valve 975 and means for yieldingly 7,

chamber having an opening in one side of sufiicient size to permit thevalve to pass therethrough and having a bushing therein, a valve stemextending through the bushing and upon which the valve is looselymounted 'for closing movement independently of the stem, co-acting stopsbetween the valve and stem for sustaining the valve in its normally openposition, an operating lever on the outer end of the valve stem, acollar adjustable rotarily about the axis of the bushing Copies of thispatent may be obtained {or five cents Washington, 11.0."

and provided, with a stop arm projecting; into the path of movement ofthe lever, and a retracting spring for the valve stem and lever andnormally holding said lever 15 against one of the stops.

In witness whereof I have hereunto set my hand this tenth day of April,1917. WILLARD A. KITTS, JR.

Witnesses: r v

SAMUEL WEINIK, ,P. RIHUGHES, q

each, by addressing the Commissioner of Patents,

